Atteris, established in 1999 and with offices in Perth in Western Australia, Australia and Houston in Texas, US, is a privately owned and independent engineering and design consultancy for subsea, pipelines and sustainable energy systems. The company is ISO 9001:2015 certified and uses continuous improvement processes to ensure the highest quality services for its clients. Its services cover all lifecycle phases of developments including concept definition, engineering and design, construction support, operations support and decommissioning.